$50 less than newegg, $30 less than I've seen it elsewhere. No rebates or any other hassles. The usb and serial connectivity is great, I like that it can gracefully shut things down when power starts getting low.

I've been nothing but impressed with Cyberpower units. Much better built than APC and more software features too. Probably better still would only be a high-end Eaton unit. But man-o-man are those spendy.

I'm thinking of getting one for my main rig, already have one for my little server. One thing that really annoys me about UPSes are the annoying loud beeping alarm when the power goes out. On my old cyberpower there didn't seem to be any easy way to disable it, it was loud and annoying and useless, I already knew the power was out anyway....all it did was drive me nuts while I looked for a flashlight.

I'm thinking of getting one for my main rig, already have one for my little server. One thing that really annoys me about UPSes are the annoying loud beeping alarm when the power goes out. On my old cyberpower there didn't seem to be any easy way to disable it, it was loud and annoying and useless, I already knew the power was out anyway....all it did was drive me nuts while I looked for a flashlight.

I agree, that incessant beeping is annoying as all hell. Fortunately, there's a setting to disable that alarm now in the power panel.

Do any of these Cyberpower units have a low level hum or buzz while operating?

And any major difference vs. the ones with the LCD screen on them?

I don't know if others have a buzz or humm to them, but mine does not. It just pretty much sits there quietly.

I previously had an APC one that had an LCD on it. It's very nice/useful to be able to see the current status, wattage draw, battery status and so forth on the LCD, but I don't think it's worth paying a big premium for. You get all the same information (and a lot more) through the power panel on a PC connected to the device by USB cable.

I've been happy with CyberPower. One of the lower-end units, a -500 of some sort, once was completely destroyed due to a nearby lightning strike. Every peripheral connected to it was fine, every peripheral not connected to it got zapped badly. I was quite impressed by that.

For people affected by Sandy, it also won't be able to power off of a generator. I'm waiting for a good deal on the PFC line, I hope this Black Friday.

Really?

I thought that the input frequency is what is important for running one of these off a generator, and if the output waveform is simulated or not only impacts if the computer powersupply would accept it. This model and the cheapest PFC model I looked at both have input frequency of 57Hz - 63Hz.

I thought that the input frequency is what is important for running one of these off a generator, and if the output waveform is simulated or not only impacts if the computer powersupply would accept it. This model and the cheapest PFC model I looked at both have input frequency of 57Hz - 63Hz.

Yep, It's the input frequency that matters. Most UPS's (the above included) share the same frequency handling as the output of generators (+/-5% on 60Hz). That being said, the power coming from generators is often very noisy and full of harmonics. That's why most UPS setups that are designed to run off of standby generator are the Online variety instead of Interactive variety. Portable Generators produce some of the worst power quality as far as delivery is concerned, so if this UPS is going to be interacting with a generator often, or integrated into some household Automatic Transfer system, it is worth moving to an Online unit like an Eaton hybrid / online generator or a full house online Generator (like an APC On-Line SmartUPS or Symmetra unit). An online generator separates the input and output entirely by converting the incoming AC to DC and then the DC to a pure sine wave. That way regardless of the type or quality of the power coming in, you can be certain that the power coming out is clean as can be expected.

But all being said, I suppose that's beyond this conversation. Any such units are many many times more than this unit is.

Top protect my plasma television and computer, I bought an APC SMT1500 used for $200. Its line interactive but when the power goes off (once or twice a month) the TV or computer doesn't even notice a hiccup (heck, the power in battery mode is cleaner than in standard mode because of the pure sine wave it generates off battery power.)

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But all being said, I suppose that's beyond this conversation. Any such units are many many times more than this unit is.

Thanks for the information. Feel free to extrapolate. I do speak from experience however, as only my active-PFC worked off of my brother-in-law's generator during a 6-day outage, not his simulated sine-wave unit. Though there could be other factors at work here. I just hope he gives me back my unit, as he seems taken with it.

One, generators aside (never owned one), I have never had any problems running simulated wave UPS'es with active PFC power supplies, and even though the web is abuzz with warnings against it, surprisingly, there are very few (I'm almost tempted to say none) first hand accounts of simulated wave UPS'es not working with active PFC. So personally I'm convinced this is just a ploy to upsell you to more expensive pure sine UPS.

That's not listed on Costco's site, but I do recall some UPS being on their shelf and will check. I suspect that here in Sandy-landfall territory [NJ, DE, NY, CO], UPS's are no more on the shelves this week than generators are.

I've four UPS's around the house (TV[=Monitor], LAN, computer, stereo) so when we lost Power -- 5 minutes after I emailed that "Sandy" was abating and nothing hurt us -- I laughed and turned the TV back on (it always shuts-down during a UPS transition to battery)... and found my ISP (Comcast) had failed along with the Power. Sigh. [Comcast returned after 30 hrs.]

Powering LED light bulbs, the re-purposed UPS's kept lights on wherever I required them for the 40 hour outage.

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One, generators aside (never owned one), I have never had any problems running simulated wave UPS'es with active PFC power supplies, and even though the web is abuzz with warnings against it, surprisingly, there are very few (I'm almost tempted to say none) first hand accounts of simulated wave UPS'es not working with active PFC. So personally I'm convinced this is just a ploy to upsell you to more expensive pure sine UPS.

I've never owned anything other than a pure sine wave UPS. However you will definitely find documented cases of cheaper square wave (or step sine wave) backups wreaking havoc with active PFC power supplies, in the form of whine/buzz, instability or even making them inoperable. I'd imagine this scenario would be made more probable depening on the voltage of your linesource, whether US or Europe, and the components of the actual power supply itself.

Some very good information in this thread, thanks guys. This UPS seems to work fine with the two PC's I have hooked up to it. To test it, I just unplugged the power cord to the UPS and the two PC's kept humming along happily for at least 20 mins. I'm sure I'll do more testing, but it seems fine right now.